We present high angular and velocity resolution two-dimensional kinematic observations in the spectral lines of Hα and CO J=1-->0 of the circumnuclear starburst region in the barred spiral galaxy M100, and compare them with kinematics derived from our previously published numerical modeling. The Hα data, fully sampled and at subarcsecond resolution

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We present echelle spectroscopy in the 3500-10300Å range of the Hourglass Nebula, which is embedded in the Galactic H II region M8. The data were obtained using the 2.1m telescope at Observatorio Astronomico Nacional in San Pedro Mqrtir, Baja California. We have measured the intensities of 274 emission lines, in particular 88 permitted lines of C+

We have acquired narrowband imaging of NGC 2346 in the transitions H I λ6563 and λ4861 and [O III] λ5007. As a result, we are able to evaluate the variation of both excitation and extinction over the projected central parts of the nebular shell. Extinction appears to be surprisingly uniform, and there is (in particular) little evidence for the

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X-ray scattering measurements are performed in order to verify % that the mechanism leading to the DC electric field induced $C_{2v}^{19} o C_{2v}^{ eq 19}$ phase transition in KDP crystal at 119 K is the changing of the local sites symmetries of phosphate group from $C_2$ in the $C_{2v}^{19}$ phase to $C_s$ in the $C_{2v}^{ eq 19}$ phase. It is